摘要
Antibiotic abuse in food processing could threaten human health via either direct pathogen or drug-resistant infection.To curb this situation,it is of vital significance to identify trace level of antibiotics in foodstuffin a point-of-care inspection manner.Here,a smartphone-based electrochemical system was developed for the quantitation of chloramphenicol(CAP).The differential pulse voltammetric reduction of CAP was measured facilely on a piece of gold-deposited screen-printed electrode,which was docked onto a palm-sized detector with remote directives from a mobile APP of Bluetooth handshaking and digital display.Under optimal conditions,the target CAP could be determined in a range from 1 nmol/L to 5μmol/L with a detection limit of 0.25 nmol/L.Further tests on emulate samples demonstrated the miniaturized device could handle the food-screening scenarios with accuracy,convenience and quick response.
基金
financially supported by the National Key Research and Development Program of China for International Science&Innovation Cooperation Major Project between Governments(2018YFE0113200)
National Natural Science Foundation of China(21874071,22104058)
Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX21_0281)
Fundamental Research Funds for the Central Universities(30921013112,30920021125,30922010501)
